Drag-saw machine.



PATENTED FEB. 7, 1905.

G. O. WALKER.

DRAG SAW MACHINE.

APPLICATION rum) oo'r. 14.1904.

UNITED STATES Patented February '7, 1905.

GEORGE O. \VALKER, OF \VALKER, OREGON.

DRAG-SAW MACHINE.

SPECIFICATION forming part of Letters Patent N0. 781,700, dated February7, 1905.

Application filed October 14, 1904. Serial No. 228,461.

To all whom it 'I)I//I/ 7/ concern:

Be it known that I, GEORGE O. \VALKER, a citizen of the United States,residing at \Valker,county of Lane, and State of Oregon, have inventedcertain new and useful Improvements in Drag-Saw Machines, of which thefollowing is a specification.

This invention relates to portable drag-saw machines, and moreparticularly to the apparatus for operating them.

lieretofore in sawing a log after it has fallen from the stump it hasbeen necessary to move the power or engine with the portable dragsaw asthe latter is moved along the length of the log to make the successivecuts which saw up the log into short blocks.

The object of the present invention is to provide novel means foroperating the portable drag-saw from the engine or power so that thepower may remain stationary at all times, though the drag-saw is movedlengthwise of the log to make the successive cuts; and the inventionalso aims to provide an improved arrangement of pulleys or sheaves onthe drag-saw to effect this object.

The invention consists in the novel features and combinations appearingmore fully hereinafter and recited in the appended claims.

In the accompanying drawings, Figure 1 is a plan view illustrating theapparatus and its manner of use; Fig. 2, a rear view looking toward thelog; Fig. 3, a rear elevation of the machine; Fig. l, a detail plan viewof the improved pulley arrangement.

Referring lirst to Figs 3 and l, the machine has a four-wheeled truck 1,which carries a frame 2, in the upper part of which journaled a largecable-sheave 3, whose plane extends transversely of the truck. The drag-saw 3 may be mounted in the usual manner, so as to fall as thesaw-cut deepens, and operated from sheave 3 by crank 3", pitrnan 3', andclutch 2. .lournaled on stub-shafts a and 5, secured to the frame at thelower and side portion thereof, are small sheaves 6 and 7, the formerlying at an angle nearly approximating the vertical and the latter beingdisposed in a plane nearly approximating the horizontal, it beingunderstood that these sheaves are tangentially disposed relative to thesheave 3.

Reference being had to Figs. 1 and 2, the manner of use of the inventionwill be understood. The numeral 8 represents the fallen log out from thestump 9 and which it is desired to saw up into short blocks. Thetraction-engine or other power 'lOis stationed adjacent one end of thelog 8, and a vertical sheave 11 is mounted on any suitable support 12,(at the time of sawing or previously on a regular standard.) A cable 13is then passed around the drum 14 of the engine and one strand leddirect to sheave 11. The balance of the cable is then passed aroundsheaves 6 and 7 and around sheave 3. The rotation of drum 1% turnssheave 3 and reciprocates the drag-saw 3'. After the cut has been madethe truck 1 is wheeled to another position, (the engine 11') meanwhileremaining in its former position,) as shown by dotted lines, Fig. 1,without stopping the engine 10 and positioned where desired to make thesucceeding cut, this method of sawing being carried on, starting withone end of the log, until the entirelog is sawed up into short blocks.

A very great saving of time and labor is obtained by using my apparatusfor operating the drag-saw, as in the old way the engine has to be movedeach ti1ne the drag-saw is moved to make a succeeding cut.

Having thus described my invention, what 1 claim as new, and desire tosecure by Letters Patent, is--- 1. A portable sawing-machine mounted totravel in a line substantially at right angles to the cutting plane ofthe saw to make successive cuts, and comprising a saw, and asaw-operating sheave, in combination with two sheaves and means forpower-driving one of them, and an operating-cable passing about suchsheaves, said cable being arranged in a line substantially parallel tothe path in which the sawing-machine adapted to travel to makesuccessive cuts, and said c: ble being carried around the saw-operatingsheaves.

2. A portable sawing-machine mounted to travel in a line substantiallyat right angles to the cutting plane of the saw to make successive cuts,and comprising a saw, and a mg-machine is adapted to travel to make suc-IO saw-operatingsheave, in combination with cessive cuts, and said cablebeing carried two sheaves and means for power-driving one around thesaw-operating sheave.

of them, an operating-cable passing about In testimony whereof Ihereunto aflix my such sheaves, guide-sheaves placed ad acent isignature in presence 0t tWo Witnesses;

the saw-operating sheave to change the plane GEORGE O. WALKER. of thecable as it passes to and from said saw- WVitnesses: operating sheave,said cable being arranged J EROME KNOX,

in a line parallel to the path in Which the saw- A. H. KING.

